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Most likely the gas valve is seizing up, 95%. Give it a good wrap with a crescent wrench or screwdriver handle when it is trying to open. VERY rarely does the board drop the voltage or the transformer get weak.

Most likely the gas valve is seizing up, 95%. Give it a good wrap with a crescent wrench or screwdriver handle when it is trying to open. VERY rarely does the board drop the voltage or the transformer get weak.

Looks like it's the solenoid for the gas valve. I figured I couldn't hurt it no more by taking it apart and looking at it.

I applied 24vac with a variable transformer, and all the gas valve solenoid does it buzz, and it won't suck the plunger up to let the gas through. The others seem to work ok. Guess I will be trying to buy one tomorrow.